31920740

素因数分解:

$2^2\times 5^1\times {\mathrm{79}}^1\times {\mathrm{89}}^1\times {\mathrm{227}}^1$

素因数の和:404

約数の個数: 48

約数和(自身を含む): 68947200

約数和(自身を除く): 37026460

約数列:

[1, 2, 4, 5, 10, 20, 79, 89, 158, 178, 227, 316, 356, 395, 445, 454, 790, 890, 908, 1135, 1580, 1780, 2270, 4540, 7031, 14062, 17933, 20203, 28124, 35155, 35866, 40406, 70310, 71732, 80812, 89665, 101015, 140620, 179330, 202030, 358660, 404060, 1596037, 3192074, 6384148, 7980185, 15960370, 31920740]

約数ペア:

[(1, 31920740), (2, 15960370), (4, 7980185), (5, 6384148), (10, 3192074), (20, 1596037), (79, 404060), (89, 358660), (158, 202030), (178, 179330), (227, 140620), (316, 101015), (356, 89665), (395, 80812), (445, 71732), (454, 70310), (790, 40406), (890, 35866), (908, 35155), (1135, 28124), (1580, 20203), (1780, 17933), (2270, 14062), (4540, 7031)]